口腔科医生拔牙前常考虑用力方向即病牙应从哪个方向脱出牙槽阻力最小。本文介绍用叩击法拔除下颌阻生智齿的体会。患者，南斯拉夫船员，男性，22岁，要求拔除近中斜位阻生齿8八本人先将牙挺自才近中颗侧牙根面与其齿稽之间深深楔入，然后用牙锤叩击牙挺柄头．牙锤用力方向与牙 Dentists often consider the direction of force before pulling teeth that is, which direction the tooth should come out of the alveolar resistance minimum. This article describes the use of percussion method to remove impacted mandibular wisdom teeth experience. Patient, Yugoslav crew, male, 22 years old, requesting removal of proximal incisors 8 I first wedged my teeth near my cuspid root face and her teeth, then tapped with a dental mallet Tooth pretty head. Hammer force direction and teeth